Straight knitting machine



Nov. 1, 1932. K. R. uEBER NEd-rr STRAIGHT KNITTING MACHiNE Filed Aug. 21, 1931 In venior' Karim-hard Lieberknechf by his Hfio'meys Patented Nov. 1, 1939 LIEBERKNECH'I', G. M. B. EL, GERMANY F OBERLUNGWITZ, GERMANY, A. CORPORATION OF STRAIGHT KNITTING EACHINE Application filed August 21, 1931, Serial No. 558,563, and in Germany August 29, 1980.

This invention relates to straight knitting machines and more particularly to a holder for bobbins for the jacquard yarns on a straight knitting machine. It has heretofore been customary on ribknitting machines having acquard attachments to mount the jacquard bobbins in front of the frame of the machine, in which position they interfere not only with the manipulation of the machine but also make it difficult to handle the bobbins themselves. The holder for the bobbins is customarily placed in a horizontal position aboutthe level of the bed of the machine. According to the present invention the bobbin holder is so mounted as to be swung out of the operators way when the machine is;

running and to be swung up into a convenient position for manipulation by the operator when it is necessary to adjust the bobbins themselves.

In the drawing, Figure 1 is an end elevation of a portion of the frame of a straight knitting machine showing the bobbin holder in solid lines in operative position and in dot and dash lines in position for changing ..or

renewing the bobbins.

Figure 2 is a front elevation of aportion of the' frame of the straight knitting machine showing the bobbin holder in operative posi- '80 tion, wherein the first division is ready for operation, while the other divisions have no bobbins in the bobbin holder.

Referring to the drawing, the machine has the customary frame with a horizontal front bar 1, having arms 2 projecting outwardly from the bar 1 to which the bobbin holder is attached. On the arms 2 are mounted jacquard frames 10 carrying jacquard sinkers 11. In the drawing, the dotted lines 7 repre- 4 sent the yarn, the yarn being shown in its passagefrom. the typical jacquard bobbins 6' to the ]acquard sinkers 11. The jacquard mechanism may be of any usual type.

The novel manner in which the bobbin holder is mounted on the arms 2 will now be described. Lying at the outer ends of the arms 2 are pivot points 3 and co-axial with them is a yarn guide 9 lying longitudinally of the machine, the pivot points 3 being for 59 the bobbinholder 4. The part of the bobbin the bobbin holder is swung upwardly to the horizontal position shown by the dot and holder which is attached to the pins 3 is above the pins 5 on which the bobbins 6 are mounted, so that the yarns passing ofi the bobbins thus move in an upward direction in order to reach the guide 9. Before reaching the guide 9 the yarns pass over spacing wires 8 carried by the bobbin holder above the bobbin pins 5, there being a spacing wire for each row of bobbins longitudinally of the machine. From thesespacing wires 8 the yarns pass upwardly and inwardly to and through the guide 9 whence they are guided to jacquard mechanism, as shown in the drawing. The guide wires 8 insure, the yarns always passing off the bobbins at the same time and at a uniform angle, thus providing uniformity of tension at all times. It will be noted that the yarns at the'guide 9 are guided on a line which is co-axial with the pivotal mounting of the bobbin holder and therefore there is no disturbance of the length of the yarn drawn when the bobbin holder is pivoted about its axis. When it is desired to change the bobbins or otherwise manipulate them,

dash lines in Fig. 1 and when the machine is ready for operation the bobbin holder is swung downwardly to the position shown in solid lines. When the bobbin holder has beenswung upwardly to the horizontal position,

. it is held by the arms 12, which are mounted on the jacquard frame of thestraight knitting machine. It will be obvious that in this way it is possible for the operator to have easy access to the bobbins when desired and yet have the bobbins located out of the way when manipulating the machine proper, at the same time insuring that the feeding of the yarns from the jacquard bobbins is always uniform.

What I claim is: 1. A straight knitting machine having a plurality of pattern bobbins, a frame, and a bobbin holder pivotally mounted on said frame, in combination. with a guide for the yarns from said bobbins located at the pivotal axis of the bobbin holder so as to guide the bobbin yarns through that axis at all times.

2. In a straight rib knitting machine, a 100 frame and jacquard apparatus, in combination with a holder for the jacquard bobbins pivotaHy attached to the front of the frame of the machine, constructed and arranged 5 with relation to said jacquard apparatus so as to swing about its pivot point without any change in tension of the yarns from the bobbins.

3. In a straight rib knitting machine, a frame and jacquard apparatus, in combination with a holder for the jacquard bobbins pivotally attached to the front of the frame of the machine to swing from horizotal to vertical positions, and means adapted to guide the yarns from the bobbins to the jacquard apparatus through the pivotal axis of the bobbin holder with the same tension on the yarns when the holder is hanging vertically from its pivotal axis andwhen it is held horizontally from said axis.

4. A straight knitting machine having jacquard apparatus including a pluralit of i'lacquard bobbins, a frame and a ho bin older pivotally mounted on said frame, the tops of said bobbins being carried below the pivotal axis of the holder when the latter is horizontal, in combination with a guide lo cated coaxial with the pivotal axis of the holder so as to guide the bobbin yarns through the pivotal axis of the holder at all times without any change in tension of the bobbin yarns.

In testimony whereof I have signed my name to this specification. KARL RICHARD LIEBERKNECHT. 

